/*
 *@Student 张策
 */
public class Main {
    public static void main(String[] args) {
        new B();
        System.out.println(B.num);
    }
}
class B{
    static {
        System.out.println("B");
        num=10;
    }
    public static int num=100;
    public B(){
        System.out.println("G");
    }
}
